手法を比較

	音線追跡（Acoustic Ray Tracing）	部屋のインパルス応答
分野	音響学	音響学
系統	Process / pipeline	Process / pipeline
提唱年	1979	1965
提唱者	James Allen, David Berkley	Manfred Schroeder
種類	Computational room acoustics method	Measurement pipeline for room acoustics
原典	Allen, J. B., & Berkley, D. A. (1979). Image method for efficiently simulating small-room acoustics. Journal of the Acoustical Society of America, 65(4), 943–950.	Schroeder, M. R. (1965). New method of measuring reverberation time. Journal of the Acoustical Society of America, 37(6), 409–412.
別名	ray tracing, geometric acoustics, image source method, sound ray propagation	RIR, impulse response measurement
関連	5	5
概要	Acoustic ray tracing is a computational technique for predicting sound propagation in rooms by treating acoustic energy as rays that reflect specularly off surfaces. Formalized by Allen and Berkley in 1979 via the image source method, ray tracing is one of the most computationally efficient methods for room acoustic simulation, especially for early and mid-reflections. It is widely used in audio engineering, architectural acoustics, and interactive spatial audio for virtual environments.	The Room Impulse Response (RIR) is a measure of how a physical space (room) affects acoustic signals propagating through it. First formalized by Manfred Schroeder in 1965, RIR captures the complete acoustic character of a space by measuring the system response to an impulsive sound source. It is fundamental to characterizing room acoustics, designing audio systems, and modeling spatial audio effects.